Table 2.

Correlations between Regional Mean Cerebral Blood Flow and PIB-based Measures by Subject

Subject	PIB SUVpeak	PIB SUV3.5–4min	PIB SUV6min	R1
A	0.852	0.844	0.876	0.881
B	0.796	0.742	0.815	0.821
C	0.761	0.713	0.784	0.788
D	0.860	0.830	0.862	0.873
E	0.726	0.774	0.776	0.787
F	0.810	0.781	0.832	0.831
G	0.805	0.801	0.816	0.822
H	0.784	0.810	0.829	0.833
I	0.773	0.773	0.794	0.601
J	0.811	0.815	0.829	0.834
K	0.904	0.889	0.912	0.912
L	0.799	0.773	0.779	0.779
M	0.853	0.839	0.853	0.852
N	0.780	0.776	0.811	0.813
O	0.764	0.740	0.786	0.770
P	0.815	0.796	0.834	0.839
Q	0.777	0.770	0.803	0.806
R	0.785	0.806	0.825	0.840
S	0.857	0.841	0.878	0.862
T	0.824	0.822	0.854	0.858
U	0.823	0.840	0.868	0.871
V	0.777	0.745	0.797	0.779
W	0.734	0.734	0.765	0.755
X	0.729	0.772	0.789	0.790
MEAN	0.800	0.783	0.824	0.817
SD	0.044	0.073	0.038	0.060
CV%	5.53%	9.34%	4.61%	7.40%

PIB peak = standardized uptake value (SUV) at the individual’s peak, PIB SUV_3.5–4min = SUV during the frame acquired from 3.5 – 4 minutes post-administration, PIB SUV_6min = SUV calculated from the sum of the first 6 minutes post-administration, R1 = relative delivery using cerebellum as reference tissue calculated from the simplified reference tissue model 2 (SRTM2), SD = standard deviation, CV% = coefficient of variation expressed as a percent of the mean.